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8.2.1.7. CT Disconnection Detection
1. Control Starting Condition
a. Total Current is below 0.74 ~ 0.94 Amp.
b. Operating Frequency is 72 Hz (E18CK), 95 Hz (E21CK) +1 and above.
c. Continuously for 20s.
2. Control Contents
a. Abnormal signal transmitted to indoor unit after 3 minutes outdoor power is supplied. (Indoor unit stop)
3. Control Cancellation Condition
Starting condition, (1) is not fulfilled.
8.2.1.8. Low Frequency Protection Control 1
When the compressor operate at frequency lower than 22 Hz for 240 minutes, the operation frequency will be increased to 22 Hz
for two minutes.
8.2.1.9. Low Frequency Protection Control 2
When all the below conditions occur, minimum value (Freq. MIN) for the frequency instructed to compressor will change to 30 Hz.
Temperature, T, for: Cooling/Soft Dry Heating
Indoor intake air (°C) T 15 or T 30 T 14 or T 28
Outdoor air (°C) T 13 or T 38 T 4orT 24
Indoor heat exchanger (°C) T 30 T 0
8.2.1.10. Minimum Frequency Protection Control
• During cooling operation (Anti Freezing control, soft dry) carry out the following operation.
1. During remote control setting is less than 28 deg
Indoor Fan Speed
Above Hi minHz = 21
Above Me- minHz = 21
Less than Me- minHz = 18
Auto minHz = 16
2. During Powerful ON
minHz = 22
However, when less than thermo OFF for 120 sec. continuously, the above control will be cancel.
• During heating operation, operate the followings control.
1. During Remote Control setting is less than 18 deg
Indoor Fan Speed
Above Hi minHz = 30
Above Lo minHz = 25
Less than Lo minHz = 15
2. During Powerful ON
minHz = 35
However, when less than thermo OFF for 100 sec. continuously, the above control will be cancel.
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